Schumann Resonanz Ultra-Niederfrequenz Pulswellengenerator Audio Resonator
16,26 €
Digital circuit crystal oscillator frequency reference, more stable, stronger anti-interference. This product can not only output 7.83Hz Schumann wave. Waveform: Sine wave(can't output Other waves). but also can adjust the frequency within the range of 0.01Hz~30KHz.
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